1388741 has 4 divisors (see below), whose sum is σ = 1406400. Its totient is φ = 1371084.

The previous prime is 1388719. The next prime is 1388743. The reversal of 1388741 is 1478831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1388741 - 2¹⁰ = 1387717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1388698 and 1388707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8711 + ... + 8868.

It is an arithmetic number, because the mean of its divisors is an integer number (351600).

2^1388741 is an apocalyptic number.

It is an amenable number.

1388741 is a deficient number, since it is larger than the sum of its proper divisors (17659).

1388741 is an equidigital number, since it uses as much as digits as its factorization.

1388741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17658.

The product of its digits is 5376, while the sum is 32.

The square root of 1388741 is about 1178.4485563655. The cubic root of 1388741 is about 111.5681981387.

The spelling of 1388741 in words is "one million, three hundred eighty-eight thousand, seven hundred forty-one".